when using ipsec on the backend side, this error pops up in the haproxy log from time to time:
Layer4 connection problem, info: "General socket error (No buffer space available) we have tried both strongswan and libreswan, error is still the same. there is nothing strange in the ipsec logs, connection seems stable. but as soon as we start generating some light traffic, haproxy loses connectivity with the backend nodes. we are running centos 7, standard repositories. any ideas what could be wrong?
